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HVACR

16 Channel Controller

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What is the RJ11 port for on a 16 channel controller? Just curious.

Thanks

HVACR

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4 minutes ago, HVACR said:

What is the RJ11 port for on a 16 channel controller? Just curious.

Thanks

HVACR

The RJ11 connector can be used the same way as the cat5, data and power.

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I can use a standard phone line wire to link controllers?

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31 minutes ago, HVACR said:

I can use a standard phone line wire to link controllers?

Yes but most use it as  a backup if the RJ45 connectors go bad.

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HVACR,

One of the connectors went out on one of my controllers last year, so I tried to use the phone line jacks, and the controller began to smoke.  No idea why, but I decided to stay away from using them.

vern

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Back before CAT(whatever) became popular and before it was the de-facto standard for communications, it was EXPENSIVE.  Phone wire on the other hand was CHEAP and already in use on long distance RS485 networks.  It is a vestige of those times.

The RJ11 is, as Mr. P stated, a good backup in case one of the RJ45 fails.   Twisted Pair (using the RJ45) is always preferred, but the RJ11 with phone line will work in a pinch.

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